CN108162937B - Pneumatic energy supplementing system of hybrid electric vehicle - Google Patents
Pneumatic energy supplementing system of hybrid electric vehicle Download PDFInfo
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- CN108162937B CN108162937B CN201810095025.2A CN201810095025A CN108162937B CN 108162937 B CN108162937 B CN 108162937B CN 201810095025 A CN201810095025 A CN 201810095025A CN 108162937 B CN108162937 B CN 108162937B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to a pneumatic energy supplementing system of a hybrid electric vehicle, which comprises: the device comprises a three-way joint, 4 one-way valves, an energy supplementing air cylinder, a combined electromagnetic valve, 3 air pressure signal switches and a whole vehicle ECU; wherein, 3 outlets of the combined electromagnetic valve are respectively communicated with air inlets of air cylinders of 21, 22 and 24 loops in a vehicle braking loop through one-way valves; the air inlet of the energy supplementing air cylinder is communicated with one port of the three-way joint through a one-way valve, and the air outlet is communicated with 3 inlets of the combined electromagnetic valve; one port of the three-way joint is communicated with the 1 port of the four-loop protection valve of the vehicle, and the other port of the three-way joint is communicated with the outlet of the air dryer of the vehicle; the 3 air pressure signal switches are respectively arranged on the air cylinders of the loops 21, 22 and 24 and are connected with the whole vehicle ECU in a signal manner; and the whole vehicle ECU is connected with the combined electromagnetic valve and independently controls the switch of each branch in the valve. The pneumatic energy supplementing system can greatly improve the braking safety of the hybrid electric vehicle with only one energy source for driving the air compressor.
Description
Technical Field
The invention relates to a pneumatic energy supplementing system of a hybrid electric vehicle, and belongs to the field of vehicle subsystems.
Background
With increasing emphasis on environmental protection by society and people, a lot of hybrid vehicle types are presented in the automobile industry, and the most variety is hybrid driving of two power sources (such as fuel and other new energy sources) at present. In such a hybrid vehicle type, a vehicle type adopting a pneumatic braking system is generally provided with only one energy source for driving the air compressor, and the air compressor is not operated when the vehicle is driven by the other energy source, and the braking power is maintained by solely relying on the energy storage device of the original vehicle, while in practice, the air compressor is usually driven by only a fuel engine.
In the prior art, the air compressor can be driven only when the engine is operated, and the air compressor cannot be operated when the new energy power drives the vehicle, so that the brake system cannot be inflated, and the air compressor can only work by the power stored in the air storage cylinder; after multiple actions, the air pressure in the air cylinder of the driving loop is reduced, so that the speed cannot be reduced safely and even the vehicle can be stopped; the auxiliary gas storage cylinder is lowered in pressure, so that gear shifting and other conditions cannot be caused, and driving safety is affected.
Therefore, designing an air pressure energy supplementing system capable of supplementing air pressure to each air reservoir of a brake system when the air compressor is not in operation is a problem to be solved by those skilled in the art.
Disclosure of Invention
In the prior art, when an engine of a hybrid electric vehicle is not operated, the air cylinder of a pneumatic braking system cannot be supplemented with energy, so that the safety of the vehicle is affected; in order to solve the problem, the invention provides the pneumatic energy supplementing system of the hybrid electric vehicle type, which can automatically control the energy storage cylinder of the braking system according to the pressure of the energy storage device of the braking system of the vehicle so as to supplement energy for the air storage cylinder of the braking system, thereby ensuring the safety of the vehicle.
The invention adopts the following technical scheme:
a hybrid vehicle pneumatic energy charging system, comprising:
the device comprises a three-way joint, 4 one-way valves, an energy supplementing air cylinder, a combined electromagnetic valve, 3 air pressure signal switches and a whole vehicle ECU;
the combined electromagnetic valve comprises 3 channels which are connected in parallel, and 3 outlets are respectively communicated with air inlets of the air cylinders of the circuits 21, 22 and 24 in the vehicle braking energy storage circuit through one-way valves;
the air inlet of the energy supplementing air cylinder is communicated with one port of the three-way joint through a one-way valve, and the air outlet is divided into 3 inlets of 3 paths of communicated combined electromagnetic valves;
one port of the three-way joint is communicated with the 1 port of the four-loop protection valve of the vehicle, and the other port of the three-way joint is communicated with the outlet of the air dryer of the vehicle;
the 3 air pressure signal switches are respectively arranged on the air cylinders of the loops 21, 22 and 24, are connected with the whole vehicle ECU and transmit switch signals according to the pressure in the air cylinders;
and the whole vehicle ECU is connected with the combined electromagnetic valve through an electric wire and independently controls the switch of each shunt in the valve.
Preferably, the 4 check valves are all check air inlet valves, and the combined electromagnetic valve is formed by combining three conventional electromagnetic valves in parallel.
Preferably, the set value of each air pressure signal switch is: when the pressure in the air reservoir is less than or equal to 0.55MPa, a continuous switch signal which enables the ECU of the whole vehicle to control the shunt corresponding to the combined electromagnetic valve to keep open is sent, and when the pressure in the air reservoir is more than 0.55MPa, no signal is sent.
The invention has the following advantages:
(1) Safety: the shortages of the conventional braking system can be made up by additionally arranging the replenishing air reservoir and the corresponding replenishing control system, and the braking safety of the vehicle is greatly improved.
(2) The cost is low: the whole vehicle ECU related by the invention is a part of the original vehicle, and an air pressure signal switch, a one-way valve, an energy supplementing air cylinder and an electromagnetic valve are all parts of the vehicle, so that the cost is low.
(3) Is convenient for adding: the size of the occupied space of the invention mainly depends on the size of the energy supplementing air cylinder, and the size of the energy supplementing air cylinder depends on the requirements of different vehicle types; according to the effective mileage driven by a non-diesel vehicle in a hybrid vehicle type, a 40L air cylinder can be generally satisfied, and the 40L air cylinder is used in a large scale in a conventional vehicle type, so that the air cylinder is easy to arrange in practice.
(4) The applicability is wide: the scheme of the invention only relates to an air circuit and a circuit, does not relate to other structures, and is basically suitable for all hybrid electric vehicle types with only one power source for driving the air compressor.
Drawings
FIG. 1 is a schematic diagram of the principle of operation of a brake energy storage system of a non-energy-replenishment system in the prior art;
FIG. 2 is a schematic diagram of a system architecture in an embodiment of the present invention;
FIG. 3 is a schematic diagram of the air pressure flow direction during operation of the energy charging system according to the embodiment of the invention;
FIG. 4 is a schematic diagram of the flow of air pressure when the energy charging system is not operating in accordance with an embodiment of the present invention;
wherein: 1. an air dryer; 2. a four-circuit protection valve; 3. a regenerating air receiver; 4.22 loop air reservoir; 5.21 loop air reservoir; 6.23 loop air reservoir; 7.24 loop air reservoir; 8. a one-way valve; 9. an air pressure signal switch I; 10. an air pressure signal switch II; 11, an air pressure signal switch III; 12. a three-way joint; 13. combining electromagnetic valves; 14. an energy supplementing air cylinder; 15. and the whole vehicle ECU.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1, which is a schematic diagram of the operation principle of a braking system without an energy supplementing system in the prior art, it can be seen that, during the running of a vehicle, only the rotation of the air compressor can supplement energy to the braking system through the air dryer. If the air compressor does not rotate, the air pressure in the air reservoir of the braking system cannot be timely supplemented after being consumed in braking, gear shifting and other operations, the braking force is reduced when the air reservoir is light, the braking distance is too long, the driving mileage of the hybrid electric vehicle is limited, and the braking and control capability is lost when the air reservoir is heavy, so that serious vehicle accidents occur.
The crankshaft of the diesel engine in the conventional vehicle type drives the air compressor to rotate, so that the engine works only by working the air compressor, and the vehicle is provided with a certain energy storage device, so that the vehicle can be ensured to have safe braking performance.
The hybrid power vehicle type is generally provided with only one energy source for driving the air compressor, and the air compressor does not work when the vehicle is driven by the other energy source, and the energy storage device (mainly an air storage cylinder for storing compressed air) of the original vehicle is independently relied on; in this case, the driving mileage is sacrificed under the condition of ensuring the safety, and the potential safety hazard of braking occurs under the condition of ensuring the driving mileage, which is a problem to be solved.
In the pneumatic braking energy storage system of the heavy-duty car, basically all four-loop protection valves are used, and each four-loop protection valve is provided with an air inlet and four air outlets; the air inlet is generally called 1 port, and the four air outlets respectively correspond to four loops generally called 21, 22, 23 and 24 for short, and are generally called 21, 22, 23 and 24 ports respectively. Of the four loops, the loop 21 is a rear axle air pressure energy storage loop, the loop 22 is a front axle air pressure energy storage loop, the loop 23 is a parking air pressure energy storage loop, and the loop 24 is an auxiliary air pressure energy storage loop.
As shown in figures 2 to 4, the invention is connected with a three-way joint 12 from the opening of the four loops 1 of the original vehicle, and is connected with an energy supplementing air reservoir 14 through a one-way valve 8, and the air in the air reservoir is controlled by a combined electromagnetic valve 13 to realize energy supplementing for the braking energy storage loops 21, 22 and 24 of the original vehicle. The control of energy replenishment is determined according to the pressure in the air cylinders of the original vehicle braking energy storage circuits 21, 22 and 24, and the pressure in the air cylinders of the circuits 21, 22 and 24 is measured respectively through an air pressure signal switch I9, an air pressure signal switch II 10 and an air pressure signal switch III 11, and the air pressure signal switch sends corresponding switch signals to the whole vehicle ECU15 when the pressure reaches a set pressure value; the whole vehicle ECU15 sends control signals to the control terminals of the 3 solenoid valves constituting the combination solenoid valve 13, respectively, according to the received switching signals, to control the on and off of the respective branches of the combination solenoid valve 13. Under the condition of connection, the energy supplementing system supplements air for 3 air cylinders; under the disconnection condition, the gas storage cylinder of the original vehicle cannot flow backwards due to the existence of the 3 one-way valves 8, and the braking system of the original vehicle cannot be influenced even if the energy supplementing system fails.
Specifically, the embodiment is a pneumatic energy supplementing system for a hybrid electric vehicle, including: the three-way joint 12, 4 one-way valves 8, an energy supplementing air cylinder 14, a combined electromagnetic valve 13, 3 air pressure signal switches and a whole vehicle ECU15;
the combined electromagnetic valve 13 is formed by combining three conventional electromagnetic valves in parallel and comprises 3 channels connected in parallel, and 3 outlets are respectively communicated with air inlets of air cylinders of 21, 22 and 24 loops in a vehicle braking energy storage loop through a one-way valve 8;
the air inlet of the energy supplementing air cylinder 14 is communicated with one port of the three-way joint 12 through 1 one-way valve 8, and the air outlet is divided into 3 inlets of 3-way communicated combined electromagnetic valves;
one port of the three-way joint 12 is communicated with the 1 port of the four-loop protection valve 2 of the vehicle, and the other port is communicated with the outlet of the air dryer 1 of the vehicle;
the 3 air pressure signal switches are respectively and directly arranged on the loop air cylinders 21, 22 and 24 through threads, and are connected with the whole vehicle ECU15 through a circuit and transmit signals to the whole vehicle ECU;
the parking air pressure energy storage loop (23 loops in four loops) is an air break brake, namely when the air pressure in the air storage cylinder of the 23 loops is less than or equal to 0.55MPa, the parking braking air chamber automatically brakes due to the action of the energy storage spring, and the situation is safe and beneficial, so that the energy supplementing system does not supplement energy for the parking loop.
The whole vehicle ECU15 is connected with the combined electromagnetic valve 13 through a wire and controls the switch of each branch in the valve independently, and the specific wiring mode is a general technology and does not belong to the distinguishing technical characteristics of the invention, and detailed description is not needed; the 4 one-way valves 8 are all one-way air inlet valves.
The set value of each air pressure signal switch is as follows: when the pressure in the air reservoir is less than or equal to 0.55MPa, the internal circuit of the switch is switched on and outputs a continuous switch signal, so that the whole vehicle ECU15 controls the shunt opening corresponding to the combined electromagnetic valve 13; when the pressure in the air reservoir is more than 0.55MPa, the internal circuit of the switch is disconnected, no switching signal is output, and the whole vehicle ECU15 cannot receive the continuous switching signal, so that the corresponding shunt of the combined electromagnetic valve 13 is controlled to be closed. The corresponding parameter setting and man-machine conversation program belong to the common technology of common application and do not belong to the invention point.
The air source of the energy supplementing air storage cylinder comes from the 24 ports of the four-loop protection valve, and when the air compressor charges the original air storage cylinder, the energy supplementing air storage cylinder is directly charged synchronously; the highest pressure in the energy supplementing air cylinder is the cut-off pressure of the air dryer and is equal to the highest pressure of the braking system.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention, and the parts not described in detail and shown in partial detail may be applied to the prior art and are not described in detail herein. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Claims (3)
1. A hybrid vehicle pneumatic energy charging system, comprising:
the device comprises a three-way joint (12), 4 one-way valves (8), an energy supplementing air cylinder (14), a combined electromagnetic valve (13), 3 air pressure signal switches and a whole vehicle ECU (15);
the combined electromagnetic valve (13) comprises 3 channels which are connected in parallel, and 3 outlets are respectively communicated with air inlets of the air cylinders of the circuits 21, 22 and 24 in the vehicle braking energy storage circuit through one-way valves (8);
an air inlet of the energy supplementing air cylinder (14) is communicated with one port of the three-way joint (12) through a one-way valve (8), and an air outlet is divided into 3 inlets of a 3-way communicated combined electromagnetic valve (13);
one port of the three-way joint (12) is communicated with the 1 port of the four-loop protection valve (2) of the vehicle, one port of the three-way joint is communicated with the outlet of the air dryer (1) of the vehicle, and four air outlets of the four-loop protection valve (2) are respectively communicated with loops 21, 22, 23 and 24;
the 3 air pressure signal switches are respectively arranged on the air cylinders of the loops 21, 22 and 24, are connected with the whole vehicle ECU (15) and transmit switch signals according to the pressure in the air cylinders;
the whole vehicle ECU (15) is connected with the combined electromagnetic valve (13) and independently controls the switch of each branch in the valve.
2. Pneumatic energy supply system according to claim 1, characterized in that 4 of said unidirectional valves (8) are unidirectional inlet valves, and said combined solenoid valve (13) is formed by combining three conventional solenoid valves in parallel.
3. The air pressure energy supply system of claim 1, wherein each of said air pressure signal switches has a set point of: when the pressure in the air reservoir is less than or equal to 0.55MPa, a continuous switch signal which enables the whole vehicle ECU (15) to control the combined electromagnetic valve (13) to be kept on corresponding to the shunt is sent, and when the pressure in the air reservoir is more than 0.55MPa, no signal is sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095025.2A CN108162937B (en) | 2018-01-31 | 2018-01-31 | Pneumatic energy supplementing system of hybrid electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095025.2A CN108162937B (en) | 2018-01-31 | 2018-01-31 | Pneumatic energy supplementing system of hybrid electric vehicle |
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| Publication Number | Publication Date |
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| CN108162937A CN108162937A (en) | 2018-06-15 |
| CN108162937B true CN108162937B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810095025.2A Active CN108162937B (en) | 2018-01-31 | 2018-01-31 | Pneumatic energy supplementing system of hybrid electric vehicle |
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|---|---|---|---|---|
| US4549888A (en) * | 1984-11-07 | 1985-10-29 | Allied Corporation | Automatic control for an external air supply |
| CN2726981Y (en) * | 2004-06-17 | 2005-09-21 | 中国人民解放军63983部队 | Self brake device of automobile |
| EP1785325A1 (en) * | 2005-11-12 | 2007-05-16 | Haldex Brake Products GmbH | Control device for an air pressure brake system for a vehicle |
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| EP2463168A1 (en) * | 2010-12-10 | 2012-06-13 | WABCO GmbH | Compressed air supply device, method for controlling same and stability valve |
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Family Cites Families (2)
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| US6758536B2 (en) * | 1999-03-03 | 2004-07-06 | Charles Jacob | Braking system for railroad car/semi-tractor combination |
| US7216941B2 (en) * | 2005-04-18 | 2007-05-15 | International Truck Intellectual Property Company, Llc | Parking brake lock-in key switch system with automatic application for a vehicle with an air brake system |
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2018
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4549888A (en) * | 1984-11-07 | 1985-10-29 | Allied Corporation | Automatic control for an external air supply |
| CN2726981Y (en) * | 2004-06-17 | 2005-09-21 | 中国人民解放军63983部队 | Self brake device of automobile |
| EP1785325A1 (en) * | 2005-11-12 | 2007-05-16 | Haldex Brake Products GmbH | Control device for an air pressure brake system for a vehicle |
| CN101312864A (en) * | 2005-12-09 | 2008-11-26 | 威伯科有限合伙公司 | Electro-pneumatic brake control device |
| EP2463168A1 (en) * | 2010-12-10 | 2012-06-13 | WABCO GmbH | Compressed air supply device, method for controlling same and stability valve |
| CN104760583A (en) * | 2015-04-29 | 2015-07-08 | 中国重汽集团成都王牌商用车有限公司 | Automobile front axle parking brake device and automobile parking brake system |
| CN205010215U (en) * | 2015-09-28 | 2016-02-03 | 东风特汽(十堰)客车有限公司 | Passenger train spring stored energy parking braking system |
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| CN108162937A (en) | 2018-06-15 |
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